[202012] sairedis submodule update (#9156)

These changes are included in this PR:

07e1f79 [syncd] Add workaround for warm boot new objects (sonic-net#959)
50fd353 Fix the option missing in kernel config issue (sonic-net#956)
e77503c [syncd] Comparison logic workaround for empty buffer profile (sonic-net#906) (sonic-net#941)

Author: tjchadaga